Removing caked on dryer lint from concrete floor and walls?

Qusetions: I moved right into a household wherever the prior tenants by no means bothered to exchange a adaptable dryer vent exhaust hose. so that they continued drying garments, as caked on dryer lint commenced blowing out of the rip about the facet of exhaust hose and now many years of dryer lint is caked on floor and wall approximately dryer. I replaced hose but would want to obtain the lint off the floor. i am discovering its nearly not possible to obtain it off the floor. i tried using scraping it that has a sonic wallpaper scraper, and so on. does anybody know of a means to obtain this things off?

thanks in advance

Answers:A stiff brush will in all probability perform ideal, or wet it down a little after which scrub.